resource "aws_network_interface" "vmray-worker-interface" {
  count = var.vmray_worker_instance_count
  subnet_id = var.private_subnets[count.index % 3]
  security_groups = [ data.aws_security_group.typical-host.id, aws_security_group.vmray_worker_sg.id ]
  description = "vmray-worker"
  tags = merge(var.standard_tags, var.tags, { Name = "vmray-worker" })
}

resource "aws_instance" "vmray-worker-instance" {
  count = var.vmray_worker_instance_count
  tenancy = "default"
  ebs_optimized = true
  disable_api_termination = var.instance_termination_protection
  instance_initiated_shutdown_behavior = "stop"
  instance_type = var.instance_types["vmray-worker"]
  key_name = "msoc-build"
  monitoring = false
  iam_instance_profile = "msoc-default-instance-profile"

  ami = data.aws_ami.ubuntu2004.image_id
  # We need to ignore ebs_block_device changes, because if the AMI changes, so does the snapshot_id.
  # If they add a feature to block more specific changes (eg `ebs_block_devices[*].snapshot_id`), then
  # that could be removed.
  lifecycle { ignore_changes = [ ami, key_name, user_data, ebs_block_device ] }

  root_block_device {
      volume_type = "gp3"
      volume_size = "60"
      delete_on_termination = true
      encrypted = true
      kms_key_id = data.aws_kms_key.ebs-key.arn
  }

  network_interface {
    device_index = 0
    network_interface_id = aws_network_interface.vmray-worker-interface[count.index].id
  }

  user_data = data.template_cloudinit_config.cloud-init-vmray-worker[count.index].rendered
  tags = merge( var.standard_tags, var.tags, { Name = "vmray-worker-${ count.index }" })
  volume_tags = merge( var.standard_tags, var.tags, { Name = "vmray-worker-${ count.index }" })
}

data "template_file" "cloud-init-vmray-worker" {
  count = var.vmray_worker_instance_count
  template = file("${path.module}/cloud-init/cloud-init.tpl")

  vars = {
    hostname = "vmray-worker-${ count.index }"
    fqdn = "vmray-worker-${ count.index }.${var.dns_info["private"]["zone"]}"
    environment = var.environment
    salt_master  = var.salt_master
    proxy = var.proxy
    aws_partition = var.aws_partition
    aws_partition_alias = var.aws_partition_alias
    aws_region = var.aws_region
  }
}

# Render a multi-part cloud-init config making use of the part
# above, and other source files
data "template_cloudinit_config" "cloud-init-vmray-worker" {
  count = var.vmray_worker_instance_count
  gzip          = true
  base64_encode = true

  # Main cloud-config configuration file.
  part {
    filename     = "init.cfg"
    content_type = "text/cloud-config"
    content      = data.template_file.cloud-init-vmray-worker[count.index].rendered
  }

  # Additional parts as needed
  #part {
  #  content_type = "text/x-shellscript"
  #  content      = "ffbaz"
  #}
}

module "private_dns_record_vmray_worker" {
  count = var.vmray_worker_instance_count
  source = "../../submodules/dns/private_A_record"

  name = "vmray-worker-${ count.index }"
  ip_addresses = [ aws_instance.vmray-worker-instance[count.index].private_ip ]
  dns_info = var.dns_info
  reverse_enabled = true

  providers = {
    aws.c2 = aws.c2
  }
}